<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<script src="js/jquery-3.0.0.js" type="text/javascript" charset="utf-8"></script>
		<link rel="stylesheet" type="text/css" href="css/text.css"/>
	</head>
	<body>
		<input type="button" id="" value="按钮" />
		<div class="a"></div>
		<script>
			$(document).ready(function(){
				$("input").click(function(){
					$(".a").show(200)
				})
			})
			
			
			
			
			
		</script>
		
	</body>
</html>
